# RS Aggarwal Class 6 Math First Chapter Number System Exercise 1E Solution

## EXERCISE 1E

*Estimate each of the following products by rounding off each number to the nearest ten:*

**1. **38 x 63= 2394

Nearest ten is **2400**

**2. **54 x 47= 2538

Nearest ten is **2500**

**3. **28 x 63= 1764

Nearest ten is **1800**

**4. **42 x 75= 3150

Nearest ten is **3200**

**5. **64 x 58= 3712

Nearest ten is **3600**

**6. **15 x 34= 510

Nearest ten is 600

*Estimate each of the following products by rounding off each number to the nearest hundred: *

**7. **376 x 123= 46248

Nearest hundred is **40000**

**8. **264 x 147= 38808

Nearest hundred is **30000**

**9. **423 x 158= 66834

Nearest hundred is **80000**

**10. **509 x 179= 91111

Nearest hundred is **100000**

**11. **392 x 138= 54096

Nearest hundred is **40000**

**12. **271 x 339= 91869

Nearest hundred is **90000**

*Estimate each of the following products by rounding off the first number upwards and the second number downwards:*

**13. **183 x 154= 28182

**20000**

**14. **267 x 146= 38982

**30000**

**15. **359 x 76= 27284

**28000**

**16. **472 x 158= 74576

**50000**

**17. **680 x 164= 111520

**70000**

**18. **255 x 350= 89250

**90000**

*Estimate each of the following products by rounding off the first number downwards and the second number upwards:*

** 19. **356 x 278= 98968

**90000**

**20. **472 x 76= 35872

**32000**

**21. **578 x 369= 213282

**200000**